ReactiveState class
A widget that listens to a single reactive state and rebuilds accordingly.
This widget should be used with one stateful reactive controller, such as ValueState, InitedState, or VoidState.
Unlike ReactiveStates, which listens to multiple state keys, ReactiveState listens to only one and is simpler to use for isolated updates.
Example:
final counter = InitedState<int>(0);
ReactiveState(
counter.on((value) => Text('Count: $value')),
);
// Later:
counter.refreshUpdate((count) => count + 1);
- Inheritance
-
- Object
- DiagnosticableTree
- Widget
- StatefulWidget
- ReactiveState
Constructors
- ReactiveState(StateBuilder stateBuilder, {Key? key, Widget defaultCase()?})
-
Creates a ReactiveState widget bound to a single reactive state.
const
Properties
- defaultCase → Widget Function()?
-
A fallback widget builder if the state was never initialized or updated.
final
- hashCode → int
-
The hash code for this object.
no setterinherited
- key → Key?
-
Controls how one widget replaces another widget in the tree.
finalinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- stateBuilder → StateBuilder
-
The builder associated with a specific state key.
final
Methods
-
createElement(
) → StatefulElement -
Creates a StatefulElement to manage this widget's location in the tree.
inherited
-
createState(
) → State< ReactiveState> -
Creates the mutable state for this widget at a given location in the tree.
override
-
debugDescribeChildren(
) → List< DiagnosticsNode> -
Returns a list of DiagnosticsNode objects describing this node's
children.
inherited
-
debugFillProperties(
DiagnosticPropertiesBuilder properties) → void -
Add additional properties associated with the node.
inherited
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
toDiagnosticsNode(
{String? name, DiagnosticsTreeStyle? style}) → DiagnosticsNode -
Returns a debug representation of the object that is used by debugging
tools and by DiagnosticsNode.toStringDeep.
inherited
-
toString(
{DiagnosticLevel minLevel = DiagnosticLevel.info}) → String -
A string representation of this object.
inherited
-
toStringDeep(
{String prefixLineOne = '', String? prefixOtherLines, DiagnosticLevel minLevel = DiagnosticLevel.debug, int wrapWidth = 65}) → String -
Returns a string representation of this node and its descendants.
inherited
-
toStringShallow(
{String joiner = ', ', DiagnosticLevel minLevel = DiagnosticLevel.debug}) → String -
Returns a one-line detailed description of the object.
inherited
-
toStringShort(
) → String -
A short, textual description of this widget.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited